High temperature oxidation of inconel 939 produced by additive manufacturing
Journal article, 2024
High temperature oxidation of additively manufactured (Laser-powder bed fusion) IN939 (AM IN939) was studied at 900°C in dry air for 168 hours. AM IN939 cut parallel/perpendicular to the building direction, including conventionally manufactured (CM) IN939 were exposed to assess the influence of AM microstructure and its inherent anisotropy on oxidation properties. Microstructural anisotropy had no significant impact on oxidation properties. AM and CM IN939 exhibited nearly identical mass gains, yet local spallation was observed in the former. Further investigation involved oxidation of heat-treated AM IN939, revealing improved adhesion, possibly due to transformation of fine dendritic/cellular structure into coarse equiaxed grains.
Cr O 2 3
High temperature oxidation
Additive manufacturing
Laser-Powder Bed Fusion
Spallation
IN939
Author
Alberto Visibile
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Kerem Gündüz
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Gebze Institute of Technology (GYTE)
Mohammad Sattari
Chalmers, Physics, Microstructure Physics
Irina Fedorova
Chalmers, Physics, Microstructure Physics
Kanthal AB
Mats Halvarsson
Chalmers, Physics, Microstructure Physics
Jan Froitzheim
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Corrosion Science
0010-938X (ISSN)
Vol. 233 112067Subject Categories (SSIF 2011)
Manufacturing, Surface and Joining Technology
DOI
10.1016/j.corsci.2024.112067